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Let me write for you about the other Google algorithms.

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1. BOSTON algorithm (March 2003)
Objective: Emphasizes incoming links, targeted phrases and unique content.
Debriefing: Users report a noticeable decrease in back links. Heavily cross-loaded linked sites pay a penalty and report lower PageRank. Update favors sites with constantly updated content and impressive back links.

http://www.seo.com/blog/google-wages-war-spam/


  See you later, when I'll continue to write about these Google algorithms.

[PageRank]

2. CASSANDRA algorithm (April 2003)

http://www.seo.com/blog/google-wages-war-spam/

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3. DOMINIC algorithm (May 2003)

http://www.seo.com/blog/google-wages-war-spam/

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4. ESMERALDA algorithm (June 2003)
Objective: Gives preference to pages offering specific information to visitors. Determines where key phrases fit the hierarchy.
Debriefing: Spam is considerably less than it was after Dominic and Cassandra. The update advises users to compate link counts from Dominic and Esmeralda, which offers a fairer picture than compating Esmeralda index and pre-Dominic link counts.

http://www.seo.com/blog/google-wages-war-spam/

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5. FLORIDA algorithm (November 2003)

Objective: Eliminated spam with simple linking and other features ensuring that tightly optimized and cleanly liked sites do really well.
Debriefing: Shows a clear progression in indexing, helping to clean up spam. Searchers' interest is given top priority. Update attempts to encourage white hat websites, which adhere to the quality requirements.

http://www.seo.com/blog/google-wages-war-spam/

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6. AUSTIN algorithm (January 2004)


http://www.seo.com/blog/google-wages-war-spam/

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7. BRANDY algorithm (February 2004)

Objective: Emphasizes quality content and the importance of the Latent Semantic Indexing.
Debriefing: Offers useful insights into the workings of Google. Google gives more credit to words like trust, authority, reputation, rather than branding terms.

http://www.seo.com/blog/google-wages-war-spam/

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8. ALLEGRA algorithm (February 2005)

Objective:  Identifies spam sites that rank high in the search engine.
Debriefing: Encourages users to give feedback about sites that deserve higher rankings. Many users report their websites dissapearing from the Google rankings. Some complain that a few sites with spam still receive high rankings after the update.

http://www.seo.com/blog/google-wages-war-spam/

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9. BOURBON algorithm (May 2005)

Objective: Responds to spam complaints and re-inclusion requests.
Debriefing: The update attempts to implement strategic changes in search processes and make them more effective. Update focuses on switching from old data centers to new ones.

 http://www.seo.com/blog/google-wages-war-spam/

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10. JAGGER algorithm (October 2005)
Objective: Changes how links are valued and updated PageRank for public view. Encourages user groups to report sites employing black hat SEO techniques. Excludes spam sites from the search engine. Websites with low-value links lose rankings.
Debriefing: Many high trafficked websites turn upside down overnight.

 
http://www.seo.com/blog/google-wages-war-spam/

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11. BIG DADDY algorithm (February 2006)

Objective: Changes how websites are crawled and determines PageRank by relevance of their incoming/outgoing links. Sends spam sites into a supplemental category.
Debriefing:Users notice that even after complying with Google's "help" their websites are still going "supplemental".

http://www.seo.com/blog/google-wages-war-spam/

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12. PLUTO algorithm (August 2006)

http://www.seo.com/blog/google-wages-war-spam/

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13. CAFFEINE algorithm (August 2009)

http://www.seo.com/blog/google-wages-war-spam/

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14. MAYDAY algorithm (May 2010)

Objective: Implements long tail algorithm change for sites that are losing rankings on long tail keywords.

Debriefing: Websites that depend on long tail keyword searches now rank higher.

http://www.seo.com/blog/google-wages-war-spam/